API-20: Adding invite endpoint

src/models/partyplaner/data/Data.router.ts

@@ -138,3 +138,35 @@ dataRouter.get('/event/:isDevCall', async (req: Request, res: Response) => {
         res.status(500).send({'message': 'Internal Server Error. Try again later.'});
     }
 });
+
+dataRouter.get('/invite/:isDevCall', async (req: Request, res: Response) => {
+    try {
+        let userId = (req.query.userId ?? '').toString();
+        let sessionId = (req.query.sessionId ?? '').toString();
+        let sessionKey = (req.query.sessionKey ?? '').toString();
+        let useDev: boolean = (req.params.isDevCall ?? '') === 'dev'; // TBD
+
+        if (userId === '' || sessionId === '' || sessionKey === '') {
+            res.status(400).send({
+                'status': 'WRONG_PARAMS',
+                'message': 'Missing or wrong parameters'
+            });
+            return;
+        }
+
+        if (!await UserService.checkSession(useDev, userId, sessionId, sessionKey)) {
+            res.status(403).send({
+                'status': 'INVALID_SESSION',
+                'message': 'The user or session could not be found or the session is invalid'
+            });
+            return;
+        }
+
+        let data = await DataService.getInvitesData(useDev, userId);
+
+        res.status(200).send(data);
+    } catch (e) {
+        logger.error('Error handling a request: ' + e.message);
+        res.status(500).send({'message': 'Internal Server Error. Try again later.'});
+    }
+});

src/models/partyplaner/data/data.service.ts

@@ -88,6 +88,24 @@ export interface Event {
     registrations: Registration[];
 }
 
+/**
+ * Used in the getInvitesData method as a return value
+ */
+export interface ReceivedInvite {
+    inviteId: string;
+    validUntil: Date;
+    alreadyUsed: boolean;
+    inviteKey: string;
+    eventName: string;
+    eventDescription: string;
+    takesPlaceDate: Date;
+    registrationUntilDate: Date;
+    maxParticipants: number;
+    eventCreatorId: string;
+    creatorFirstName: string;
+    creatorLastName: string;
+}
+
 /**
  * Returns all data about the given user
  * @param useDev If the dev or prod database should be used
@@ -268,7 +286,7 @@ export const getEventData = async (useDev: boolean, userId: string): Promise<Eve
                 invitedPersonName: row.invited_person_name
             });
         }
-        
+
         let eventsList: Event[] = [];
         for (let event of eventsMap.values()) {
             eventsList.push(event);
@@ -283,3 +301,49 @@ export const getEventData = async (useDev: boolean, userId: string): Promise<Eve
         }
     }
 };
+
+/**
+ * Returns all events the user is invited to
+ * @param useDev If the dev or prod database should be used
+ * @param userId The userId of the user to fetch the friends for
+ * @return ReceivedInvite[] A list of invites
+ */
+export const getInvitesData = async (useDev: boolean, userId: string): Promise<ReceivedInvite[]> => {
+    let conn;
+    try {
+        if (useDev) {
+            conn = await dev_pool.getConnection();
+        } else {
+            conn = await prod_pool.getConnection();
+        }
+
+        let rows = await conn.query('SELECT i.invite_id, i.valid_until, i.already_used, i.invite_key, e.name as event_name, e.description as event_description, e.takes_place_date, e.registration_until_date, e.max_participants, e.creator_id, u.first_name, u.last_name FROM invitations i LEFT OUTER JOIN events e ON e.event_id = i.event_id LEFT OUTER JOIN users u ON u.user_id = e.creator_id WHERE i.user_id = ?', userId);
+
+        let invites: ReceivedInvite[] = [];
+
+        for (let row of rows) {
+            invites.push({
+                inviteId: row.invite_id,
+                validUntil: row.valid_until,
+                alreadyUsed: row.already_used,
+                inviteKey: row.invite_key,
+                eventName: row.event_name,
+                eventDescription: row.event_description,
+                takesPlaceDate: row.takes_place_date,
+                registrationUntilDate: row.registration_until_date,
+                maxParticipants: row.max_participants,
+                eventCreatorId: row.creator_id,
+                creatorFirstName: row.first_name,
+                creatorLastName: row.last_name
+            });
+        }
+
+        return invites;
+    } catch (err) {
+        throw err;
+    } finally {
+        if (conn) {
+            conn.end();
+        }
+    }
+};